Multiple balanced pump jack



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E. A. MALBAFF MULTIPLE BALANCED PUMP JACK July i5"1924. A A 1501,22@

E. A. MALBAFF MUJTIPLlE BAIJACED PUMP' JACK Filed Coti. 26. 1923 y 2 Sheets-Sheet muohio:

efl'ozne Patented July l5, 1924.

retiree EDWARD A. riaLBAFF, or FLAGLER,' command' M'ULTIPLE BALANCED PUMP JACK.

Appliation led October 26, 1923.` Serial No. 670,279.

This invention relates to multiple bal-` anced pump jacks, and has for one of its objects to provide a device of the character described which will be simple in construction, comparatively inexpensive to manufacture and install, and more ecient in use than those which have been heretofore proposed. y While not specifically. limited to any particular class of work, the inventionis particularly adapted for use with pumps which su ply water from wells, and among other `th1ngs it provides a pump jack which 1s so balanced that it will supply a constant flow of water without pulsation or `vibration such as is commonly present in small installations of this character.l Furthermore, owing to the fact that one or more of the pump pistons is always performing a working stroke, the strain upon the driving motor, as well as upon the otherparts of the apparatus is substantially constant, thereby reducing the wear and tear upon the device to a minimum. lt also permits of the use ci a smaller motor to accomplish the same results. I

With the above and other objects in View, which will appear as the description proceeds,'the invention consists in the novel details of construction, combinations and arrangements oi parts, more described, and particularly pointed out in the appended claims.

Referring to the accompanying drawwillich like reference characters designate like parte in ail the views;

Figure 1 is a side elevational View ci a gaclr constructed vin accordance with the present invention;

lig. 2 is a top plan view, partly broken errar, of the parts shown in Fig. 1;

3 is a vertical cross sectional view of the erts shown in Fig. 1, taken approximategy on the plane indicated by the line fully hereinafter ings, forming a part of this specification, in

3-3 of the said figure, lioking in the di rection of the arrows; and,

Figs. 4,-5 and 6 are' diagrammatic scctional elevational views, showing the relative f positions of the various crank members.l

Referrin drawings t e numeral 10 indicates a base which may take the form of a suitable castingr or which may be, if desired, fabricated from metal or wood. i f

Suitably mounted upon the top of the said base member 10 is a sur-basel 11,' one end 12 of which is, or may be, substantially solid, Yprovided with a plurality of holes or apertures 13 to accommodate pump rods, as will presently appear. e

Rigidly secured to the base memberl() more particularly to the said is a plurality of upright members 14, which may be traced by suitable diagonal members 15, extending fnom' the said uprights 14 to the sur-base 11as will be clear'from Figs. 1, 2 and 3.

Extending horizontally across the top of the sur-base 11 and journalled in suitable bearing blocks 16, carried thereby, is a power shaft 17, rigidly carrying at one end a driving pulley 18 and at its other onda gear or pinion 19, which meshes with a companion'gear 20,- rigidly carried by vthe counter-shaft 21, also extending horizontally across the top of the sur-base 11 and journalled in suitable bearing blocks 22 mounted thereon. The said counter-shaft 21 has rigidly secured to it in spaced relation, a pair of pinions 23 and 24, which mesh respectively with gears y25 and 26, rigidly mounted upon a crank shaft 27, which is also journalled in the bearing blocks 22.

The gears 25 and 26 are provided respec-` tively with crank pins 28 and 29, while the 'shaft 27 is provided with a crank portion 30,

the said pins and crank portion being arranged atl angles of substantially de grees from each other, as indicated more clearly in Figs. 4, 5 and 6.

The upper ends of the upri ht members 1li carry thehorizontal rod or s aft 31, upon which' are pivotally mounted three walking beams, 32, 33, and 34, each of which is preferably composed of a pair, of s coed bars, 35 and 36, substantially as own; The endsof each pair of bars which are pivotally mounted upon the shaft L31l may liti? EGE be maintained in s said connecting of the aced relation by suitable sleeves or collars 3 surrounding said shaft 31, and the. said bars preferably converge, as clearly shown in Figs. 2 and 3, to pivotally engage the upper ends of suitable connecting rods`38, '39 and 40, the lower'ends of which are respectively received by the crank pin 28, the crank member 30 and crank pin 29, as will be readily understood.

As will be clear from the drawings, the rods 38, 39 and 40 are, pivotally connected -to the walking beams v32, 33 and 34, intermediate the ends of the lattenland the extreme left hand ends of 'said beams, as seen in Figs. 1 and 2, pivotally receive the upper ends of the pump o erating rods 41, 42 and 43. These said I' sextend downwardly through the holes or apertures 13, provided in the portion 1 2 of the sur-base 11, and are pivotally connected as at 45 to the piston rods 46 pumps which, as is well known in this art, are located below the surface of the ground within' the well casing 47.

The walking beams 32, 33 and 34, may, if.. desired, be provided with additional holes or a ertures 48, 'intermediate their ends, where y the pivot connections between the said beams and the connecting rods 88, 39 and 40 may be shifted, if desired, and the said beams may further he provided with additional holes or apertures 49, adjacent their left hand ends, so that the pivotal connections between the said beams and pump operating rods 41, 42 and 43, may likewise be shifted, if desired.` Provision is thus made for accommodating the jack to pumps having different iston travels, as will be readily understood TheV operation of the present jack will be clear from the foregoing but it may be briefly summarized as follows. Power, being supplied to the pulley 18 from any suitable source not shown, will be transmitted from the shaft 17 to pinion 19, and gear 20, carried by counter-shaft- 21, and from pinions 23 and' 24 carried by the said counter-shaft to the gears 25 and 26, and 'the crank shaft 27. The rotation of the said crank shaft and the gears 25 and 26 will, through thecrank pins, 28 and 29, and the crank portion 30 ofthe shaft 27, produce reciprocatingr motion of the connectingrods 38, 39 and 40, which motion will betranslated'into an oscillatory motion of the walking beams 32, 33 and 34.

he movement of the walking beams wiil, in turn, be transmitted to the pump operating rods 41, 42 and 43, and in turn to the pump piston rods 46, pivotally connected to the said operatingr rods, thereby reciprocat- .ing the pump pistons in the Well known manner.

It will be observed that due to the fact that three walking beams and operating ascisse rods are provided which are actuated by crank members set at substantially 120 degrees apart, that at least one of the pump pistons will always be performinga working stroke, and that the said working strokes will overlap one another to such an extent as to provide an even flow of fiuid at all times during which the apparatus may be working without the usuall pulsation or vibration common in apparatuses of this type where the lap. Furthermore, owing to the fact that at least one of the pistons is always performing a working stroke, the source of power is subjected to a more constant vpull, which not only tends to reduce the wear and tear upon the motor but also upon the various operating parts of the jack.

lVhile one form of the invention has been illustrated and described, it is obvious that those skilled'in the art may vary the details of construction as well as the arrangements of pants without departing from the spirit of theinvention, and therefore it is not wished to become limited to the above disclosure except as may be required by the 'accompanyln claims.

at is claime is:

1. A device of the class described comprising a base; upright standards rigid with said base; a plurality of walking beams pivotally mounted on said standards; a power shaft journalled on said base; a crankshaft also journalled on said base;

gear connections between said power and crank shafts; crank pins carried by the gears upon said crank shaft; connecting rods connecting said crank pins and the crank portion of said crank shaft with said walking beams; and pump operating rods carrie by the ends of 'said walking beams.

2. A device ing a base; upright standards rigid with said base; three walking beams pivotally mounted on said standards; a power shaft,

a countershaft, and a crank shaft journalled on said base; gear connections between said power and counter shafts: a pair of pinions carried by said countershaft: a pair of gears carried by said crank shaft, meshing with said pinions: a crankpin carried b each of said gears, said pins and the cran portion of said crank shaft being substantially equidistantly arcuately spaced: rods connecting said crank pins and the crank portion of said crank shaft with said walking beams;` and pump operating rods carried by the ends ofsaid walking beams.

3. A device of the class described comprising a. base; upright standards rigid with one end of said base: three walking beams pivotally mounted at one end on said standards; a power shaft, a countershaft, and a crank shaft journalled on said base;l gear connections between said power and counterworking strokes d0 not overof the class described compris- -l said pins and' the crank moms@ shafts; a pair of pnons oarrie by 'said .countershafm a pau of gears carried by said crank shaft, meshingwith said pnons; a cranki pin carried by each of said gears,

ortion of said crank shaft being substanta 1y equdistaptly4 arouately spaced.; rods connecting saido orang ins and the crank portion of said v1r-mak s aft with said Walking beams intenr mediate their vnds; and pump operating rods carried by the other ends of said Walking beams. 4

In testimony whereofl ax my signature. *EDWARD A. MALBAFIY 

